CN209818647U

CN209818647U - Pneumatic extended rear power takeoff

Info

Publication number: CN209818647U
Application number: CN201920566362.5U
Authority: CN
Inventors: 王巧扣
Original assignee: Zhejiang Bai Shi Ripava Transmission Co Ltd
Current assignee: Zhejiang Bai Shi Ripava Transmission Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2019-12-20
Anticipated expiration: 2029-04-24

Abstract

The utility model provides a pneumatic overhanging type rear power takeoff, which belongs to the technical field of machinery. It has solved the big problem of current power takeoff overall structure. This rearmounted power takeoff of pneumatic overhanging formula, including the shell that has inside cavity, be equipped with input port and delivery outlet on the shell, just be close to input port department in the shell and be equipped with the input gear shaft, have the mounting hole with the input port intercommunication in the input gear shaft, wear to be equipped with in the mounting hole and extend in the outside of input port with the one end of spline hookup cover and spline hookup cover that input gear shaft meshing is connected, just keep away from input port department in the mounting hole and wear to be equipped with the traveller with spline hookup cover fixed connection, the one end that spline hookup cover was kept away from to the traveller is connected with and can drives the traveller along the drive piston of mounting hole lateral. The pneumatic external extending type rear power takeoff adopts an external extending type upper gear, so that the size of the power takeoff is reduced.

Description

Pneumatic extended rear power takeoff

Technical Field

The utility model belongs to the technical field of machinery, a pneumatic overhanging type rearmounted power takeoff is related to.

Background

The PTO, an acronym of Power Take Off, is one or more sets of speed change gears, also called Power Take-Off, which is generally composed of a gearbox, a clutch, and a controller, and is connected with a low-gear or an auxiliary gearbox output gear shaft of a gearbox to output Power to an external working device.

The existing power takeoff is mostly used for taking power laterally between a low-gear of a gearbox and an input gear of the power takeoff, or an output gear shaft of the gearbox is inserted into the power takeoff to take power, a power taking upper gear structure is generally arranged in the power takeoff, and the power takeoff is large in size and large in occupied space.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a pneumatic overhanging rearmounted power takeoff.

The purpose of the utility model can be realized by the following technical proposal:

this rearmounted power takeoff of pneumatic overhanging type, including the shell that has inside cavity, be equipped with input port and delivery outlet on the shell, just be close to input port department in the shell and be equipped with the input gear shaft, have the mounting hole with the input port intercommunication in the input gear shaft, wear to be equipped with in the mounting hole and extend in the outside of input port with the one end of spline hookup cover and spline hookup cover that input gear shaft meshing is connected, just keep away from input port department in the mounting hole and wear to be equipped with the traveller with spline hookup cover fixed connection, the one end that spline hookup cover was kept away from to the traveller is connected with and can drives the traveller along the drive piston of mounting hole lateral shifting, be equipped with the translation limit structure who prevents the excessive lateral shifting of traveller between travel.

In the pneumatic externally-extending rear power takeoff, an output gear shaft meshed with the input gear shaft is arranged in the shell and close to the output port in a penetrating manner.

In the pneumatic externally-extending rear power takeoff, one end of the output gear shaft, which is close to the output port, is connected with an output connecting disc, and one end of the output connecting disc extends to the outer side of the output port.

In foretell pneumatic overhanging type rearmounted power takeoff, translation limit structure is including setting up the spacing convex shoulder on the inner wall in mounting hole middle part to and set up in the traveller and keep away from the annular arch of the circumference outside of spline coupling sleeve one end.

In the pneumatic externally-extending rear power takeoff, a return spring is arranged in the mounting hole, one end of the return spring is abutted against the limiting convex shoulder, and the other end of the return spring is abutted against the annular bulge.

In the pneumatic extended rear power takeoff, a thrust needle bearing is arranged between the sliding column and the piston.

In the pneumatic externally-extending type rear power takeoff, one end of the spline connecting sleeve, which is far away from the sliding column, is provided with a spline connecting part.

In the pneumatic externally-extending rear power takeoff, input bearings are arranged in the shell and on the circumferential outer sides of two ends of the input gear shaft.

In the pneumatic externally-extending rear power takeoff, output bearings are arranged in the shell and on the circumferential outer sides of two ends of the output gear shaft.

In the pneumatic externally-extending rear power takeoff, a dustproof cover plate capable of sealing the output port is arranged on the outer shell and on the circumferential outer side of the output connecting disc.

Compared with the prior art, the pneumatic external extending type rear power takeoff has the following advantages:

1. the pneumatic overhanging type rear power takeoff has simple structure and is easy to manufacture.

2. This pneumatic rearmounted power takeoff of overhanging formula has simplified the structure of stepping up through the connected mode of overhanging formula, has further reduced the volume of power takeoff.

3. The pneumatic overhanging type rear power takeoff is reliable in connection and high in sealing performance.

Drawings

FIG. 1 is a schematic diagram of the present pneumatic extension rear power takeoff.

In the figure, 1, a housing; 2. an input gear shaft; 21. mounting holes; 22. a limiting convex shoulder; 23. an input bearing; 3. a spline coupling sleeve; 31. a spline connection portion; 4. a traveler; 41. an annular projection; 5. a drive piston; 6. an output gear shaft; 61. an output land; 62. an output bearing; 7. a return spring; 8. a thrust needle bearing; 9. dustproof apron.

Detailed Description

As shown in fig. 1, this rearmounted power takeoff of pneumatic overhanging type, including the shell 1 that has inside cavity, be equipped with input port and delivery outlet on the shell 1, just be equipped with input gear shaft 2 near input port department in the shell 1, the mounting hole 21 with the input port intercommunication has in the input gear shaft 2, wear to be equipped with in the mounting hole 21 and extend in the outside of input port with the spline coupling sleeve 3 that input gear shaft 2 meshing is connected and the one end of spline coupling sleeve 3, the one end that traveller 4 was kept away from to spline coupling sleeve 3 is equipped with spline connection portion 31.

The spline connecting part 31 is arranged to facilitate the input connection between the spline connecting sleeve 3 and the gearbox, and the input gear shaft 2 is driven to rotate through the spline connecting sleeve 3.

And a sliding column 4 fixedly connected with the spline connecting sleeve 3 penetrates through the mounting hole 21 and the part far away from the input port, and one end of the sliding column 4 far away from the spline connecting sleeve 3 is connected with a driving piston 5 capable of driving the sliding column 4 to move outwards along the mounting hole 21.

And a driving piston 5 is arranged to drive the sliding column 4 to translate outwards and push the spline connecting sleeve 3 to the outer side until the spline connecting sleeve is connected with the input of the gearbox.

And a sealing ring is arranged on the circumferential outer side of the driving piston 5.

And a translation limiting structure for preventing the sliding column 4 from excessively moving outwards is arranged between the sliding column 4 and the mounting hole 21.

The translation limiting structure comprises a limiting convex shoulder 22 arranged on the inner wall of the middle part of the mounting hole 21 and an annular bulge 41 arranged on the circumferential outer side of one end, far away from the spline connecting sleeve 3, of the sliding column 4.

Set up translation limit structure, prevent the excessive outside translation of traveller 4, lead to breaking away from the power takeoff.

A return spring 7 is arranged in the mounting hole 21, one end of the return spring 7 is abutted against the limiting convex shoulder 22, and the other end of the return spring is abutted against the annular protrusion 41.

And a return spring 7 is arranged, and after the force taking is finished, the sliding column 4 is pushed to one side of the piston, so that the spline connecting sleeve 3 is separated from the input connection between the gearboxes.

An output gear shaft 6 meshed with the input gear shaft 2 penetrates through the shell 1 and is close to the output port.

One end of the output gear shaft 6 close to the output port is connected with an output connecting disc 61, and one end of the output connecting disc 61 extends to the outer side of the output port.

And a thrust needle bearing 8 is arranged between the sliding column 4 and the piston.

A thrust needle bearing 8 is arranged between the sliding column 4 and the piston, so that the sliding column 4 is prevented from being in direct contact with the piston when rotating, and larger abrasion is avoided.

And input bearings 23 are arranged in the shell 1 and on the circumferential outer sides of the two ends of the input gear shaft 2.

Output bearings 62 are arranged on the circumferential outer sides of the two ends of the output gear shaft 6 in the shell 1.

And a dustproof cover plate 9 capable of sealing an output port is arranged on the outer shell 1 and positioned on the circumferential outer side of the output connecting disc 61.

The dustproof cover plate 9 is arranged to enhance the sealing performance at the output port and prevent sundries from entering the power takeoff.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Pneumatic rearmounted power takeoff, its characterized in that, including shell (1) that has inside cavity, be equipped with input port and delivery outlet on shell (1), just be close to defeated entrance in shell (1) and be equipped with input gear shaft (2), mounting hole (21) with the input port intercommunication have in input gear shaft (2), wear to be equipped with in mounting hole (21) and connect cover (3) with input gear shaft (2) meshing connection spline and the one end of spline hookup cover (3) extends in the outside of input port, wear to be equipped with in mounting hole (21) with spline hookup cover (3) fixed connection's traveller (4) and keep away from defeated entrance, the one end that traveller (4) kept away from spline hookup cover (3) is connected with and can drive traveller (4) along mounting hole (21) outside drive piston (5) that remove, be equipped with the translation limit structure that prevents the excessive outside removal of traveller between traveller (4) and mounting hole (21).

2. The pneumatic overhung rear force extractor as claimed in claim 1, wherein an output gear shaft (6) in meshing connection with the input gear shaft (2) is arranged in the housing (1) close to the output opening.

3. The pneumatic overhung rear power takeoff according to claim 2, wherein an output connecting disc (61) is connected to the output gear shaft (6) at the end close to the output port and the end of the output connecting disc (61) extends outside the output port.

4. The pneumatic externally-extending rear power takeoff according to claim 1, wherein the translation limiting structure comprises a limiting shoulder (22) arranged on the inner wall of the middle part of the mounting hole (21), and an annular protrusion (41) arranged on the circumferential outer side of one end of the sliding column (4) far away from the spline coupling sleeve (3).

5. Pneumatic externally-extending rear force extractor according to claim 4, characterized in that a return spring (7) is arranged in the mounting hole (21), one end of the return spring (7) abuts against the limit shoulder (22) and the other end abuts against the annular protrusion (41).

6. Pneumatic overhung rear force extractor according to claim 1, characterized in that a thrust needle bearing (8) is provided between the strut (4) and the drive piston (5).

7. Pneumatic overhung rear force extractor according to claim 1, characterized in that the end of the splined coupling sleeve (3) remote from the sliding column (4) is provided with a splined connection (31).

8. Pneumatic overhung rear force extractor according to claim 1, characterized in that the input bearings (23) are arranged inside the housing (1) and on the circumferential outer side of both ends of the input gear shaft (2).

9. Pneumatic overhung rear force extractor according to claim 2, characterized in that the output bearings (62) are arranged inside the housing (1) and outside the circumference of both ends of the output gear shaft (6).

10. Pneumatic power externally-extending rear power takeoff according to claim 3, characterized in that a dust cover plate (9) capable of closing the output port is provided on the housing (1) and on the circumferential outer side of the output connection disc (61).